Steam-trap.



No. 741,448. PATENTED OUT. 13, 1903.

J. H. BLESSING.

STEAM TRAP.

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PATENTED OCT. 13 1903.

I. ELESSING.

STEAM TRAP.

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UNITED STATES I atented October 13, 1903 JAMES H. BLESSING, OF ALBANY,NEW YORK.

STEAM-PTRAP.

$PECIFIQATION forming part of Letters Patent No. 741,448, dated October13, 1903.

Serial No. 1531187. (N model.)

as will enable others skilled in the art to which 7 it appertains tomake and use the same.

My invention relates to steam-traps adapted to receive the condensationof steam from asystem and return it into a'steam-generator, and has forits object to accomplish such purpose without the aid of shifting balls,weights, detents, or similar devices, and thereby produce a trap of anydesired size which shall be simple and durable in construction andpositive and effective in operation. This I accomplish by means of twobuckets arranged within an outer casing or shell, the inner bucket beingmovable and adapted to control a steam-valve, with discharge-pipesleading from said outer casing and inner bucket to the water-space of asteam-generator, and a steam-pipe connecting the steam-space of thegenerator with such outer shell or casing and provided with a valveoperated by said movable bucket.

In the accompanying drawings, Figure 1 is a side elevation of asteam-trap embodyin my invention and connected with a steam-' generator.Fig. 2 is a vertical transverse section of the trap itself. Fig. 3 is aplan view of the top of the trap;'and Fig. 4 is a vertical transversesection on the top of the trap,taken on'line 1 lot Fig. 3.

As illustrated in the drawings, the outer' casing of the trap consistsof a shell 1, having a top 2 bolted thereto. The top of the cas: ing ispreferably provided with an inlet-chamber'3, which is connected with aninlet-pipe 4, provided with a check-valve 4, through which the condensedsteam flows into the casing. Astationary bu cket5 is arranged within theshell and is secured in position in any desirable manner, preferably bymeans of brackets 6, secured to the shell 1. Amovable bucket 7 isarranged within thestationary bucket and is provided with means forguiding its vertical movement, such as a socket-head 8, which engages astem 9, se-

cured to the lower portion of the stationary bucket. A vertical movablerod is connected with the socket-head 8 in any suit-able manner,preferably by means of a pivot connection 8*. The upper end of the rod10 engages a socket-head 11, secured to the top 2 of the outer casing,and guides the upper end of said vertical rod. The upper portion of therod 10 is provided with lugs 10*, between which is arranged the end of alever 12, which is pivoted to a valve-head 15, connected with the top ofthe trap. The opposite endof the lever 12 engages a valve-stem 13, theupper and lower ends of which are guided in sockets 14 and 14*, formedin the valve-head 15. The valve-stem 13- is provided with an annulardisk 14, adapted to cooperate with a valve-seat 14, the opening of whichvalve communicates with an outlet 16 in the valvehead 15, with which asteam-pipe may be connected, leading to a steam-generator. Anexhaust-Valve 17' is also connected with the lever 12, the upper end ofwhich is guided in a socket 17, and its lower end is provided withlaterally-extending flanges, which are guided in a socket 17 having anopening leading to the atmosphere or into an exhaustpipe 28, connectedtherewith. A dischargepipe 21 is secured to the top of the casing andextends down to the lower portion of the movable bucket 7. The upper endof the dis' charge-pipe 21 communicates with achamber 19, which ispreferably provided with an airvent 20 of suitable construction. Anouter discharge-pipe 18 is connected with said chamber 19 and with adischarge-pipe 22, leading from the lower portion of the outer casing bymeans of cross connection 27 and provided with a check-valve 23. Areturn-pipe 24 extends from said cross connection to the water-space of-a steam-generator. The top of the trap is provided with a hand-hole andplate 29, by means of which the inner contents of the trap may bereached. 3

When this device is in use, enough water always remains in thestationary bucket to overcome the weight of the movable bucket 7 whenempty and raise such movable bucket and the rod 10, connected therewith.The lower lug 10 of the upper end of said rod then lifts the inner endof the lever 12 and brings the annular disk 14 down on its seat andcloses the valve-opening, so as to prevent any steam from the generatorentering the casing. The condensed steam from a system is then free toenter the casing through the inlet-pipe 4 and the check-valve 4,connected therewith, and passes into the receiving-chamber 3 and throughthe outlet-port 3 of said chamber into the stationary bucket 5. Whensaid stationary bucket becomes full, the water overflows into thechamber between the outer casing and said stationary bucket. This watercontinues to rise until finally it reaches the upper edge of the movablebucket 7 and flows into and fills said bucket. When the movable bucket 7becomes filled with water, it descends of its own weight and carrieswith it the rod 10, secured thereto, and the upper lug of said rodpresses downward the inner end of the lever 12,which thereby raises thevalve-disk 14 from its seat and permits steam from the generator toenter the casing through said valve. The pressure within the casing andthe generator then becomes equalized, and as the casing is at a higherelevation than the generator the Water in the chamber formed by theouter casing and the stationary bucket 5 passes through thelowerdischarge-pipe 22 and the coupling 27 into the pipe 24, leadingtothe water-space of the steam-generator. The air remaining in the chamber19 is permitted to escape through the vent 20, and the water in theinner movable bucket 7 passes out through the inner discharge-pipe 21,chamber 19, the outer discharge-pipe 18,0heck-valve 23,andcross-coupling 27 into the pipe 24:. The lower outlet-pipe 22 is madelarger in diameter than the discharge-pipes 21 and 18, so as to permitthe water in the chamber between the outer casing and the inner bucket 5to pass out of the easing more rapidly than the water in the innerbucket 7,which thereby makes the level of the water in said chamberlower than the level of the water in the inner bucket 7, which issomewhat retarded by the smaller dimensions of the pipes 18 and 21 andthe elbows and check-valves connected therewith. When sufficient waterhas passed out of the movable bucket 7 to enable said inner bucket to befloated by the water remaining within the stationary bucket 5, the innerbucket rises and the rod 10, connected with said bucket, causes thelower lug on said rod to raise the inner end of the lever 12 and bringthe valvedisk 11 down toward its seat; but as the disk 14 is broughtdown near its seat the supply of steam from the generator to theinterior of the casing is almost but not entirely shut off, for thereason that some water still remains in the movable bucket 7 and thewater within the stationary bucket 5 is not sufficient to raise themovable bucket 7, with the water remaining therein, so as to close thevalve-disk 1t down closely onits seat. When the valve-disk is broughtclose to its seat,

tion of the steam-pressure within the casing and the generator becomesdisturbed, and the water no longer passes out of the casing and innerbucket into the water-space of the generator; but after the equalizationof the steam-pressure within the casing and generator has becomedisturbed and the water no longer passes out of the casing and innerbucket into the generator the water remaining in the inner bucket 7being at a higher level than the water in the chamber between the outercasing and the bucket 5 is siphoned out of said chamber through thepipes 21, the chamber 19, the outer discharge -pipe 18, cross-coupling27, and discharge-pipe 22 and passes back into the chamber between theouter casing and the stationary bucket 5, and so continues until thewater in the inner bucket is at substantially the same level as thewater in the outer casing. Enough water remains in the movable bucket,however, to cover the lower end of the discharge-pipe 21. When the waterin the movable bucket 7 has reached the level of the water in theoutercasing, theinner bucket 7 has become sufliciently light in weightto be raised to its full extent by the water in the stationary bucket 5,and by means of the rod 10 connected therewith the valve-disk 14 isbrought down firmly on its seat. As this valve is closed and the steamentirely shut oif from the casing the exhaust-valve 17is opened by thesame movement of the lever 12 and the steam within the casing permittedto escape. Whenthe valve leading from the steam-generator is closed andthe exhaust-steam has passed out through the exhaust-valve 17, thecondensation of steam from a system is again permitted to flow into thestationary bucket 5 and fill said bucket and the chamber between saidbucket and the outer casing and, finally, the inner movable bucket,which again drops of its own weight and opens the valve operagain enterthe casing and equalize the pressure in the casing andsteam-gene1'ator,when ated by the lever 12 and permits steam to thecasing and central movable bucket empties as before.

I do not desire to be limited to the specific construction andarrangement of the parts shown and described herein.

My invention includes, broadly, a casing haviugasteam-pipe connectedwith the steam portion of a steam-generator, and a dischargepipeconnected with the water-space of such a generator when used with aninner movable bucket arranged within a stationary bucket and adapted tooperate a valve connected with said steam-pipe and dischargepipesleading from said inner bucket back into said casing.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a steam-generator, of a casing having pipeconnections with but not in contact therewith, the equaliza- 1 the steamportion and water portion of such IIO generator, a stationary bucketwithin said casing, a movable bucket within said stationary bucket, asteam-valve operated by said movable bucket, and discharge-pipes adaptedto siphon the water from said movable bucket back into said casing,substantiaily as shown and described.

2. The combination with a steam-generator, of an outer casing, a pipeconnection between the steam-space of said generator and said casing, astationary bucket within said casing, a movable bucket within saidstationary bucket, a steam-valve operated by said bucket, adischarge-pipe extending into said movable bucket, outer discharge-pipesconnected with said pipe and with the lower end of said casing, and pipeconnections be-.

tween said outer discharge-pipes and the water-space of asteam-generator, substantially as shown and described.

3. The combination with an outer casing, of a stationary bucket, amovable bucket, a steam-valve operated by said movable bucket, adischarge-pipe extending into said movable bucket, outer discharge-pipesconnected with said pipe and the lower portion of said casan outercasing, of a stationary bucket, a

movable bucket, and pipe connections .bebetween the interior of saidmovable bucket and the lower portion of said casing, adapted to siphonthe contents from said bucket into the interior of said casing,substantially as shown and described.

5. The combination with an outer casing, of a stationary bucket withinsaid casing, a movable bucket within said stationary bucket, a valveoperated by said movable bucket, and discharge-pipes connected with saidmovable bucket and the lower portion'of said casing, adapted to siphonthe water from said movable bucket into the interior of said casing,substantially as shown and described.

In testimony whereof I aflix' my signature in presence of two witnesses.

' JAMES H. BLESSING. Witnesses:

ROBERT W. HARDIE, BORDEN H. MILLS.

